Length of line segments using only +-*/@achille: That's true, but sqrt needs also one addition and two multiplys to get the length. By the way, I know, that length of all segments that are parallel or perpendicular to the known line segment, are easy to calculate using ratios of taxicab lengths of segments. Also length of square diagonal is easy to calculate. But I cannot find a way, if known segment and unknown segment are not parallel or perpendicular or unknown one is not a square diagonal.

Kerning on the fly -algorithmThe Gods so said this is not a mathematic question. Any ideas where this question belongs? Not Stackexchange at all?

Oct13

comment

Kerning on the fly -algorithmThis is a good example of one possible basic algorithm, sort of starting point. I believe that all kerning-on-the-fly implementations have one basic algorithm and several sub algorithms for fine tuning.

Oct13

comment

Kerning on the fly -algorithm@HenningMakholm: The first sentence is of course true. But there is an implementation of kerning-on-the-fly: Adobe's Optical Kerning, which is not bad at all. And AFAIK it is aesthetics+mathematics+coding, all in one nice package.